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Pre-stack reverse-time migration for elastic waves with application to synthetic offset vertical seismic profiles

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2 Author(s)
Sun, R. ; University of Texas, Richardson, TX, USA ; McMechan, G.A.

A pre-stack migration algorithm for elastic waves in two-dimensional variable-velocity media is developed, implemented, and tested. The algorithm operates in the time-space domain and is based on reverse-time finite-difference extrapolation of elastic waves. The algorithm is explained and demonstrated in the context of imaging of elastic vertical seismic profile data, but is applicable to any source-recorder geometry. Synthetic test examples include a point diffractor, laterally homogeneous layers, and the flank of a salt dome.

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Proceedings of the IEEE  (Volume:74 ,  Issue: 3 )